CN104874443B - A kind of classification grinding structure of vertical roller grinder - Google Patents
A kind of classification grinding structure of vertical roller grinder Download PDFInfo
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- CN104874443B CN104874443B CN201510317416.0A CN201510317416A CN104874443B CN 104874443 B CN104874443 B CN 104874443B CN 201510317416 A CN201510317416 A CN 201510317416A CN 104874443 B CN104874443 B CN 104874443B
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Abstract
The invention discloses a kind of classification grinding structure of vertical roller grinder, including determine milling zone and feed back pipe in the grinding area of the vertical roller grinder, the import of the feed back pipe is connected with the feedback outlet of powder concentrator, and the outlet of the feed back pipe is relative with the milling zone.The present invention connects back to expects pipe by using the determination milling zone in grinding area, on the feedback outlet of powder concentrator, and make the outlet of the feed back pipe structure relative with milling zone, the thinner two grades of materials returned from powder concentrator that vertical roller grinder bed of material stabilization will be restricted are separated from the new feeding bed of material, feeding milling zone concentrates grinding, on the one hand it is able to ensure that the grinding of two grades of materials has comparing efficiency high, on the other hand the stability of the new feeding bed of material on mill can be improved, the mill efficiency of new feeding is improved.In sum, using vertical roller grinder of the invention, under conditions of not sprayed water in mill, it is possible to increase the stability of operation, mill efficiency is improved, is improved product quality, is reduced power consumption.
Description
Technical field
The invention belongs to grinding technology field, the classification grinding structure of more particularly to a kind of vertical roller grinder.
Background technology
Vertical roller grinder abbreviation Vertical Mill, its grinding principle is bed of material grinding, i.e., by between particle and particle mutually extruding come
The grinding of material is realized, grinding process controllability is good, and mill efficiency is high.Vertical roller grinder at present the grinding structure that uses for：It is new to feed
, under gravity by feed bin mixing feeding mill middle part, mill rotational band animal material is rotated, and material exists for material and powder concentrator feed back
From mill middle part to mill border movement in the presence of centrifugal force, when material movement to grinding roller lower section, in collet and grinding roller
Under the collective effect of pressure, grinding roller pressing materials (bed of material), material is got under the influence of centrifugal force by grinding, the material after grinding
Collet is crossed, mill is left, vane is fallen under gravity into, grinding machine top is then brought into by high velocity air upward in vane
Powder concentrator, qualified finished product by powder concentrator choosing walk, underproof bulky grain enters feed bin through the feedback outlet of powder concentrator, with new feeding
Mill is returned after mixing and continues grinding, until the finished product that grinding is required into release mesh.
Bed of material grinding ensure it is efficient on condition that：Bed of material stabilization.Vertical roller grinder grinding unit existing structure is in pulverizing cement
During the material of the bed of material good stability such as raw material, slag, mill efficiency is high, but works as pulverizing cement, and especially grinding silicon high (match somebody with somebody by clinker
Than >=85%) and during pure silicon cement, Vertical Mill exposes that vibration is big, system power consumption is high, the low problem of main frame electric current, its main cause
It is：When grinding silicon high or pure silicon cement, because mill feed material grindability is deteriorated, semi-finished granules (45~80 μm) content in disk feeding
Increase, the mobility of the bed of material improves, unstability, the premise of bed of material grinding is lost.When therefore solving grinding silicon high or pure silicon cement
Vertical Mill vibration is big, yield poorly, the problems such as power consumption is high, it is critical only that the mill efficiency for solving the problems, such as cement semi-finished product.
The problems such as vibration that is exposed during for vertical roller grinder grinding silicon high or pure silicon cement is big, power consumption is high, it is general in the world
It is all over the way for using：Alleviated using the measure of water spray in mill, but water spray has unfavorable to performance indications such as strengths of cement in mill
Influence, thus research do not spray water under the conditions of vertical roller grinder grinding silicon high or pure silicon cement technology it is very necessary.
Traditional vertical roller grinder uses combined grinding structure, and powder concentrator feed back is with new feeding prior in the feeding bin of mill top
Mill top is fed after mixing again, can so cause new feeding layer on mill to be mingled with a large amount of fine powders before by grinding roller grinding,
The bad stability of the bed of material, mill efficiency reduction.
The content of the invention
The present invention provides a kind of classification grinding structure of vertical roller grinder to solve technical problem present in known technology,
Using the structure, under conditions of Vertical Mill is not sprayed water in mill, it is possible to increase the stability of operation, mill efficiency improved, improve and produce
Quality, reduction power consumption.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：A kind of vertical roller grinder
Classification grinding structure, including determine milling zone and feed back pipe in the grinding area of the vertical roller grinder, and the feed back pipe enters
Mouth is connected with the feedback outlet of powder concentrator, and the outlet of the feed back pipe is relative with the milling zone.
The vertical roller grinder is provided with least 2 taper grinding rollers and a mill being evenly arranged, the taper grinding roller
At interior big end outside, mill region corresponding with the big end of taper grinding roller forms the milling zone to small end；The feed back pipe
Quantity it is identical with the quantity of the taper grinding roller, all feed back pipes are evenly arranged, each taper grinding roller
Front sets a feed back pipe.
The vertical roller grinder is provided with least 2 taper grinding rollers and 1 mill being evenly arranged, and the taper grinding roller is small
At interior big end outside, the stage casing of the taper grinding roller is provided with annular groove at end；In the mill and taper grinding roller stage casing ring
The relative position of connected in star is formed with the annular projection being engaged with taper grinding roller stage casing annular groove, the mill with
The relative region of taper grinding roller small end forms the fracture area of the new feeding of one-level, in mill annular projection and the taper grinding roller
Annular groove relative region in stage casing forms the milling zone, in the mill region shape corresponding with the big end of taper grinding roller
Into grinding Runout area；The quantity of the feed back pipe is identical with the quantity of the taper grinding roller, all uniform cloth of feed back pipe
Put, the front of each taper grinding roller sets a feed back pipe.
The vertical roller grinder is provided with least 2 grinding rollers and 1 mill being evenly arranged, above the mill set with
Its affixed auxiliary mill, is provided with least 2 mixing rolls being evenly arranged, above the auxiliary mill on the auxiliary mill
Region form the milling zone；The quantity of the feed back pipe is identical with the quantity of the mixing roll, all feed back Guan Jun
Even arrangement, the front of each mixing roll sets a feed back pipe.
The vertical roller grinder is provided with least 2 pulverization rollers being evenly arranged, at least 2 mixing rolls being evenly arranged and 1
Mill, is provided with spacer ring in the middle part of the grinding area of the mill, and be distinguished into the grinding of the mill positioned at inner side by the spacer ring
Fracture area and the milling zone positioned at outside, all pulverization rollers are arranged in the fracture area, all grindings
Roller is arranged in the milling zone；The quantity of the feed back pipe is identical with the quantity of the mixing roll, all feed back pipes
It is evenly arranged, the front of each mixing roll sets a feed back pipe.
All grinding rollers are provided with a set of compression system I, and all mixing rolls are provided with a set of compression system II.
All pulverization rollers are provided with a set of compression system III, and all mixing rolls are provided with a set of compression system IV.
A piece feed back pipe is set at 30 °~45 ° of the front of each taper grinding roller.
A piece feed back pipe is set at 30 °~45 ° of the front of each mixing roll.
The mill middle part is connected using pyramidal structure with grinding area.
The present invention has the advantages and positive effects that：By using the determination milling zone in grinding area, in powder concentrator
Expects pipe is connected back on feedback outlet, and makes the outlet of the feed back pipe structure relative with milling zone, by restriction vertical roller grinder bed of material stabilization
The thinner two grades of materials returned from powder concentrator separated from the new feeding bed of material, concentrated in milling zone and ground, on the one hand
Being able to ensure that the grinding of two grades of materials has comparing efficiency high, on the other hand can improve the stabilization of the new feeding bed of material on mill
Property, improve the mill efficiency of new feeding.In sum, using vertical roller grinder of the invention, under conditions of not sprayed water in mill, energy
The enough stability for improving operation, improves mill efficiency, improves product quality, reduces power consumption.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 2；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural representation of the embodiment of the present invention 3；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the structural representation of the embodiment of the present invention 4；
Fig. 6 is the top view of Fig. 5.
Specific embodiment
For the content of the invention of the invention, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing
Describe in detail as follows：
A kind of classification grinding structure of vertical roller grinder, including determine milling zone in the grinding area of the vertical roller grinder and
Feed back pipe, the import of the feed back pipe is connected with the feedback outlet of powder concentrator, and the outlet of the feed back pipe is relative with the milling zone.
The two grades of materials returned by powder concentrator are collected using feed back pipe, two grades of materials are separated with the new feeding of one-level, and by the one-level
New feeding feeding mill middle part, the milling zone is fed by two grades of materials.
Core concept of the invention is：Separation principle, will restrict the thinner from powder concentrator of vertical roller grinder bed of material stabilization
The two grades of materials for returning separate concentration grinding from the new feeding bed of material of one-level, and the purpose of do so mainly has two：One is
Two grades of materials are thinner, can be ground using application specific architecture, the efficiency high to ensure comparing, and two is by two grades of materials from the new feeding of one-level
After being separated in the bed of material, the stability of the new feeding bed of material of mill upper level is improved, and mill efficiency can also be improved.
In the present invention, two grades of materials by the process separated in the new feeding bed of material of one-level are come by the feed back pipe being connected with powder concentrator
Realize.
Determine that the method for milling zone can have various in the grinding region of vertical roller grinder, both can be by existing grinding roller
Mill structure is improved to realize, it is also possible to carry out that clearly, grinding subsystem can also be set up on existing grinding roller and grinding disk.But
The latter can make complex system, not be proposed with.4 specific embodiments of the invention are described below.
Embodiment 1：
Keep the existing mill of vertical roller grinder and grinding roll structure and position constant, the vertical roller grinder is used and is evenly arranged
At least 2 taper grinding rollers and a mill carry out grinding, the small end of the taper grinding roller at interior big end outside, the mill
Disk region corresponding with the big end of taper grinding roller forms the milling zone；The quantity of the feed back pipe and the taper grinding roller
Quantity is identical, and all feed back pipes are evenly arranged, and the front of each taper grinding roller sets 1 feed back pipe.
In this case, the specific work process of above-mentioned classification grinding structure is：
The grinding method of the new feeding of one-level uses prior art, and by mill top feed bin feeding mill middle part, mill is rotated
Band Moving plate feeding is rotated, and material is small with grinding roller in mill under the influence of centrifugal force from mill middle part to mill border movement
Corresponding region is held to be crushed, the new feeding of pulverized one-level continues corresponding with the big end of grinding roller to mill border movement to mill
Region-milling zone, with the two grades of material mixed grindings fed from feed back pipe after enter powder concentrator.
1 feed back pipe is set in the front of each taper grinding roller, can realize that multiple spot feeding concentrates grinding.
Above-mentioned feed back pipe 4 is preferably arranged within 30 °~45 ° of the front of taper grinding roller, makes two grades of materials by feed back pipe 4 described in
Fed at 30 °~45 ° of the front of grinding roller, two grades of idle strokes of material can be shortened.In this embodiment, feed back pipe 4 is arranged in
At 30 ° of the front of taper grinding roller.
Embodiment 2：
Fig. 1~Fig. 2 is referred to, vertical roller grinds an existing mill and at least 2 taper grinding rollers being evenly arranged
Structure is improved：One) structure improvement is carried out to taper grinding roller：In the stage casing of existing taper grinding roller, annular groove is set,
The arrangement of taper grinding roller is constant, is still including small end, and big end is outside；Two) structure to mill is improved：In mill
The disk position relative with taper grinding roller stage casing annular groove 12 is formed with stings with taper grinding roller stage casing annular groove 12
The annular projection of conjunction, the fracture area 23 of the new feeding of one-level is formed in the mill region relative with taper grinding roller small end 13,
The milling zone 22 is formed in the mill annular projection region relative with taper grinding roller stage casing annular groove 12, described
The mill region corresponding with the big end 11 of taper grinding roller forms grinding Runout area 21；The quantity of the feed back pipe 4 and the cone
The quantity of shape grinding roller is identical, and all feed back pipes 4 are evenly arranged, and the front of each taper grinding roller sets an institute
State feed back pipe 4.
In the present embodiment, grinding roller and mill are equipped with clear and definite technical grading structure.Grinding roller in the width direction by
It is divided into the main grinding roller small end 13 for undertaking crushing function, mainly undertakes the grinding roller stage casing annular groove of grinding function and main
Undertake the big end 11 of grinding roller of grinding and particle correction of the flank shape function.Mill is corresponding with grinding roller to be also classified into three functional areas, constitutes such as
Tooth form occlusion structure shown in Fig. 1, increases the resistance and milling area of bed of material flowing.
In this case, the specific work process of above-mentioned classification grinding structure is：
Fig. 1 is referred to, the new feeding of one-level feeds mill middle part by mill top feed bin 3, and mill rotational band Moving plate feeding turns
It is dynamic, lump material under the influence of centrifugal force from mill middle part to mill border movement, it is to be exercised at grinding roller small end 13 when, block
The shape bed of material is because fine powder amount is few, bed of material stabilization, and crushing efficiency is high；The two grades of materials returned by powder concentrator are no longer mixed with the new feeding of one-level
Close, but collected by independent feed back pipe 4, in grinding roller front feeding milling zone 22, in milling zone 22, returned by powder concentrator
Two grades of materials and the new feeding mixed grinding of one-level being broken, because process bands herein are trench structures, bed of material restricted in flow,
Two grades of materials obtain concentrating grinding, and grinding efficiency is high；Under the influence of centrifugal force, the material by grinding continues to grinding finishing
Area 21 moves, in this region, the bed of material also therefore trench structure of region process bands, and restricted in flow obtains high-efficient grinding and correction of the flank shape,
Collet 5 is finally crossed under the action of the centrifugal force, is left mill and is completed grinding process.Carry out selecting powder subsequently into powder concentrator.
The classification grinding structure of above-mentioned vertical roller grinder is mainly made up of three kinds of functional parts：1) returned for collecting powder concentrator
The feed back pipe of material；2) process bands grading grinding roller；3) process bands classification mill.In above-mentioned three kinds of functional parts, feed back pipe 4 is
Core Feature element, is also main innovation point of the invention, feed back pipe 4 can not only determine possibility that bed of material classification grinding realizes with
It is no, and various grinding rollers and mill structural variant that can realize being classified grinding function can be derived.
The present embodiment can efficiently realize two grades of concentration grindings of fines, greatly improve mill efficiency, especially fine powder (particle diameter
80 μm) mill efficiency, theoretical calculation model technological parameter and the results are shown in Table 1.
The combined grinding technic index theoretical value of table 1 and classification grinding process Index Theory value
The grinding area of vertical roller grinder has been carried out clearly function and divided by the present embodiment, using feed back pipe by powder concentrator feed back
Different functional bands, with reference to the principle of bed of material grinding, trench structure are carried out from the angle of limitation bed of material flowing by feeding milling zone
Design, to stablize the bed of material, improves mill efficiency, the mill efficiency of two grades of fine powders is improved significantly, and refers to table
1.The present embodiment compared with the existing technology, is conducive to improving the stability of vertical roller grinder operation, increases yield, reduces system electricity
Consumption, improvement product quality.
The front of each taper grinding roller sets 1 feed back pipe 4, can realize that multiple spot feeding concentrates grinding.
Above-mentioned feed back pipe 4 is preferably arranged within 30 °~45 ° of the front of taper grinding roller, makes two grades of materials by feed back pipe 4 described in
Fed at 30 °~45 ° of the front of grinding roller, two grades of idle strokes of material can be shortened.In this embodiment, feed back pipe 4 is arranged in
At 30 ° of the front of taper grinding roller, two grades of materials are realized many by 30 ° of the front feeding milling zone 22 of each grinding roller
Select feeding and concentrate grinding.Mill middle part is connected using pyramidal structure with grinding area, to accelerate the speed that material is moved to grinding area,
Improve mill efficiency.
Embodiment 3：
Fig. 3~Fig. 4 is referred to, the vertical roller grinder is carried out using at least 2 grinding rollers 1 and 1 mill 2 being evenly arranged
Grinding, the auxiliary mill 6 affixed with it is set in the top of the mill 2, it is described aid in being provided with mill 6 be evenly arranged to
Few 2 mixing rolls 7, the auxiliary area above of mill 6 forms the milling zone.The quantity of the feed back pipe 4 is ground with described
The quantity of grinding roller 7 is identical, and all feed back pipes 4 are evenly arranged, and the front of each mixing roll 7 sets a feed back
Pipe 4.
Above-mentioned vertical roller grinder is driven using double-deck mill structure by same drive device.Grinding roller 1 and mill 2 mainly hold
The broken and grinding and the correction of the flank shape of finished particle to the new feeding of one-level are carried on a shoulder pole, the new feeding of one-level is fed by feed bin 3；The auxiliary mill
Disk 6 and mixing roll 7 undertake two grades of concentration grindings of material.The front of each mixing roll 7 sets 1 feed back pipe 4, energy
Enough realize that multiple spot feeding concentrates grinding.Above-mentioned feed back pipe 4 is preferably arranged within 30 °~45 ° of the front of mixing roll 7, makes described two
Level material can shorten two grades of idle strokes of material by feed back pipe 4 from 30 °~45 ° of the front of the mixing roll 7 feeding.By
Two grades of materials that powder concentrator is returned feed the auxiliary mill 6, the thing after grinding by feed back pipe 4 from the front of each mixing roll 7
Expect to bring powder concentrator into by the updraft of the top of mill 2 in the auxiliary dropping process of mill 6 is left, complete a grinding circulation.
The pressure F1 being applied on all grinding rollers 1 is provided by compression system I, is applied to the pressure F2 on all mixing rolls 7 by pressurizeing
System II is provided, and grinding roller 1 and mixing roll 7 each set independent compression system and pressurizeed, it is convenient to realize that grinding is strong
That spends is adjusted flexibly.In the present embodiment, feed back pipe 4 is arranged at 30 ° of the front of mixing roll, and two grades of materials are by each mixing roll
30 ° of front at the feeding milling zone.Mill middle part is connected using pyramidal structure with grinding area, to accelerate material to grinding area
The speed of motion, improves mill efficiency.
Embodiment 4：
Refer to Fig. 5~Fig. 6, the vertical roller grinder using at least 2 pulverization rollers 8 being evenly arranged, be evenly arranged to
Few 2 mixing rolls 7 and 1 mill 2 carry out grinding, are provided with spacer ring 9 in the middle part of the grinding area of the mill 2, and the spacer ring 9 is by institute
The grinding for stating mill is distinguished into the fracture area 23 positioned at inner side and the milling zone 22 positioned at outside, all pulverization rollers 8
It is arranged in the fracture area 23, all mixing rolls 7 are arranged in the milling zone 22；The number of the feed back pipe 4
Amount is identical with the quantity of the mixing roll 7, and all feed back pipes 4 are evenly arranged, and the front of each mixing roll 7 sets one
Feed back pipe 4 described in root.
Above-mentioned vertical roller grinder is fed the middle part of mill 2 by feed bin 3, is applied to all using grinding structure in parallel, new feeding
Pressure F1 on pulverization roller 8 is provided by compression system III, and the pressure F2 being applied on all mixing rolls 7 is carried by compression system IV
For.Pulverization roller 8 and mixing roll 7 are pressurizeed by independent compression system respectively, it is convenient to realize the flexible tune of severity of grind
It is whole.The front of each mixing roll 7 sets 1 feed back pipe 4, can realize that multiple spot feeding concentrates grinding.Above-mentioned feed back
Pipe 4 is preferably arranged within 30 °~45 ° of the front of mixing roll 7, makes two grades of materials by feed back pipe 4 from before the mixing roll 7
The feeding milling zone 22, can shorten two grades of idle strokes of material at 30 °~45 ° of side.In the present embodiment, the cloth of feed back pipe 4
Put at 30 ° of the front of mixing roll, two grades of materials by each mixing roll 30 ° of the front feeding milling zone 22.In mill
Portion is connected using pyramidal structure with grinding area, to accelerate the speed that material is moved to grinding area, improves mill efficiency.
The present invention derives from cement vertical roller grinder, but is not limited to cement vertical roller grinder, can be in cement slurry, slag, coal, stone
Popularization and application in the vertical roller grinders such as oil coke, superfine grinding.
Although being described to the preferred embodiments of the present invention above in conjunction with accompanying drawing, the invention is not limited in upper
The specific embodiment stated, above-mentioned specific embodiment is only schematical, be not it is restricted, this area it is common
Technical staff in the case of present inventive concept and scope of the claimed protection is not departed from, may be used also under enlightenment of the invention
To make many forms, these are belonged within protection scope of the present invention.
Claims (9)
1. the classification grinding structure of a kind of vertical roller grinder, it is characterised in that including determining in the grinding area of the vertical roller grinder
Milling zone and feed back pipe, the import of the feed back pipe is connected with the feedback outlet of powder concentrator, the outlet of the feed back pipe with it is described
Milling zone is relative；The vertical roller grinder is provided with least 2 taper grinding rollers and a mill being evenly arranged, the taper grinding
At interior big end outside, mill region corresponding with the big end of taper grinding roller forms the milling zone to roller small end；The feed back
The quantity of pipe is identical with the quantity of the taper grinding roller, and the front of each taper grinding roller sets a feed back
Pipe.
2. the classification grinding structure of a kind of vertical roller grinder, it is characterised in that including determining in the grinding area of the vertical roller grinder
Milling zone and feed back pipe, the import of the feed back pipe is connected with the feedback outlet of powder concentrator, the outlet of the feed back pipe with it is described
Milling zone is relative；The vertical roller grinder is provided with least 2 taper grinding rollers and 1 mill being evenly arranged, the taper grinding
At interior big end outside, the stage casing of the taper grinding roller is provided with annular groove to roller small end；In the mill and taper grinding roller
The relative position of section annular groove is formed with the annular projection being engaged with taper grinding roller stage casing annular groove, in the mill
The disk region relative with taper grinding roller small end forms the fracture area of the new feeding of one-level, in mill annular projection and the taper powder
Annular groove relative region in grinding roller stage casing forms the milling zone, in the mill area corresponding with the big end of taper grinding roller
Domain forms grinding Runout area；The quantity of the feed back pipe is identical with the quantity of the taper grinding roller, each described taper grinding
The front of roller sets a feed back pipe.
3. the classification grinding structure of a kind of vertical roller grinder, it is characterised in that including determining in the grinding area of the vertical roller grinder
Milling zone and feed back pipe, the import of the feed back pipe is connected with the feedback outlet of powder concentrator, the outlet of the feed back pipe with it is described
Milling zone is relative；The vertical roller grinder is provided with least 2 grinding rollers and 1 mill being evenly arranged, and is set above the mill
The auxiliary mill affixed with it is put, at least 2 mixing rolls being evenly arranged, the auxiliary mill are provided with the auxiliary mill
Area above forms the milling zone；The quantity of the feed back pipe is identical with the quantity of the mixing roll, each described grinding
The front of roller sets a feed back pipe.
4. the classification grinding structure of a kind of vertical roller grinder, it is characterised in that including determining in the grinding area of the vertical roller grinder
Milling zone and feed back pipe, the import of the feed back pipe is connected with the feedback outlet of powder concentrator, the outlet of the feed back pipe with it is described
Milling zone is relative；The vertical roller grinder is provided with least 2 pulverization rollers being evenly arranged, at least 2 mixing rolls and 1 being evenly arranged
Individual mill, is provided with spacer ring in the middle part of the grinding area of the mill, and be distinguished into the grinding of the mill positioned at inner side by the spacer ring
Fracture area and the milling zone positioned at outside, all pulverization rollers are arranged in the fracture area, all described to grind
Grinding roller is arranged in the milling zone；The quantity of the feed back pipe is identical with the quantity of the mixing roll, each described grinding
The front of roller sets a feed back pipe.
5. the classification grinding structure of vertical roller grinder according to claim 3, it is characterised in that all grinding rollers are provided with
A set of compression system I, all mixing rolls are provided with a set of compression system II.
6. the classification grinding structure of vertical roller grinder according to claim 4, it is characterised in that all pulverization rollers are provided with
A set of compression system III, all mixing rolls are provided with a set of compression system IV.
7. the classification grinding structure of vertical roller grinder according to claim 1 and 2, it is characterised in that in each taper
A piece feed back pipe is set at 30 °~45 ° of the front of grinding roller.
8. the classification grinding structure of the vertical roller grinder according to claim 3 or 4, it is characterised in that in each grinding
A piece feed back pipe is set at 30 °~45 ° of the front of roller.
9. the classification grinding structure of the vertical roller grinder according to claim 2~4 any one, it is characterised in that the mill
Disk middle part is connected using pyramidal structure with grinding area.
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| DE102016121926B4 (en) * | 2016-11-15 | 2019-12-24 | Neuman & Esser Process Technology Gmbh | Mill |
| CN110090698A (en) * | 2019-04-25 | 2019-08-06 | 南通宏泰机械制造有限公司 | Automatic powder selection device with temperature-controlling system |
| CN113457793B (en) * | 2021-07-20 | 2022-05-17 | 天津水泥工业设计研究院有限公司 | Design method of vertical mill grinding structure with different grinding areas |
| CN115888908B (en) * | 2021-09-30 | 2023-10-03 | 北京喜诺德科技有限公司 | Low-abrasion anti-blocking external circulation vertical roller mill system and application thereof |
| CN115463715B (en) * | 2022-09-20 | 2023-11-10 | 安徽国宏合金材料有限公司 | Vertical mill cavity centrifugal bulk cargo device and implementation method thereof |
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| CN1380142A (en) * | 2002-05-23 | 2002-11-20 | 邝超华 | Conical material bed vertical grinder |
| CN1621154A (en) * | 2004-12-28 | 2005-06-01 | 北京华诺维科技发展有限责任公司 | Disc type magnetic roll squeezer |
| CN104069934A (en) * | 2014-05-04 | 2014-10-01 | 上海宝钢节能环保技术有限公司 | Returning device of vertical roller mill |
| CN204865995U (en) * | 2015-06-10 | 2015-12-16 | 天津水泥工业设计研究院有限公司 | Hierarchical grinding structure of double -deck mill that vertical roller ground |
| CN204865997U (en) * | 2015-06-10 | 2015-12-16 | 天津水泥工业设计研究院有限公司 | Hierarchical grinding structure of parallelly connected grinding unit that vertical roller ground |
| CN204865994U (en) * | 2015-06-10 | 2015-12-16 | 天津水泥工业设计研究院有限公司 | Hierarchical grinding structure that vertical roller ground |
| CN204865996U (en) * | 2015-06-10 | 2015-12-16 | 天津水泥工业设计研究院有限公司 | Technical grading grinding structure that vertical roller ground |
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| CN104874443A (en) | 2015-09-02 |
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